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Speed of sound and ideal-gas heat capacity at constant pressure of gaseous trifluoroiodomethane (CF3I).

Author(s) : DUAN Y. Y., SUN L. Q., SHI L., ZHU M. S., HAN L. Z.

Type of article: Article

Summary

The speed of sound of the gaseous trifluoroiodomethane (CF3I) was measured for temperatures from 273.15 to 333.15 K and pressures from 58 to 276 kilopascals with a cylindrical, variable-path acoustic interferometer operating at 156.252 kilohertz. The uncertainty of the speed of sound was less than more or less 0.1%. The ideal-gas heat capacity at constant pressure and the second acoustic virial coefficients were determined over the temperature range from the speed of sound measurements. The ideal-gas heat capacity at constant pressure results and second virial coefficients calculated from these speed of sound measurements were compared with the available data. The uncertainty of the ideal-gas heat capacity at constant pressure was estimated to be less than more or less 1%.

Details

  • Original title: Speed of sound and ideal-gas heat capacity at constant pressure of gaseous trifluoroiodomethane (CF3I).
  • Record ID : 2000-0070
  • Languages: English
  • Source: Fluid Phase Equilib. - vol. 137 - n. 1-2
  • Publication date: 1997
  • Document available for consultation in the library of the IIR headquarters only.

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